Here are leading digital-solutions / technology companies in Sri Lanka (strong local presence, proven delivery across software, cloud, APIs, fintech, telecom and product engineering). Short notes on strengths and a source for each so you can verify or contact them.

• WSO2 — Open-source middleware, API management, identity and integration platform with major engineering operations in Colombo; strong for API, integration and identity projects. (en.wikipedia.org)

• Fortude (Brandix i3 → Fortude) — Enterprise digital transformation, ERP/cloud implementations, analytics and automation for large enterprises. Good for ERP, cloud-native apps and data projects. (en.wikipedia.org)

• MillenniumIT ESP — Enterprise systems, trading/financial systems, systems integration, managed services and infrastructure (long-standing local leader for mission‑critical platforms). (en.wikipedia.org)

• Virtusa (Sri Lanka operations) — Global digital engineering and IT services with large Sri Lankan centres; strong in digital transformation, engineering at scale and industry-focused solutions. (srilankabusiness.com)

• 99X Technology — Product-engineering specialist (Agile/software product development) that builds commercial software products and R&D teams for ISVs. Good for product development engagements. (99xtechnology.com)

• Calcey — Agile product engineering and quality-assurance shop with offshore delivery from Colombo; well suited for startups and Silicon‑Valley teams needing a Sri Lanka delivery centre. (crunchbase.com)

• CodeGen International — Travel/booking and high‑performance transaction platforms (Sri Lankan-grown fintech/travel-tech software provider). Good if you need high-scale booking/inventory systems. (srilankabusiness.com)

• Dialog Axiata (and Axiata Digital Labs) — Sri Lanka’s largest telco with a big digital‑services arm (mobile APIs, payments, cloud & identity solutions) and capability to run large consumer/telecom digital programs. (dialog.lk)

• Millennium / LSEG spinouts & local specialist firms — (e.g., MillenniumIT product teams / ESP) — notable when you need exchange-grade, low-latency or regulated-fintech systems. (marketsmedia.com)

• hSenid / local HR & enterprise-app specialists — established local players for HR/enterprise apps and vertical digital solutions (useful for HRIS, payroll, and sector-specific platforms). (See local company directories and EDB listings for profiles.)

Notes on choosing the right partner

• Match company type to your need: product engineering (99X, Calcey), middleware & APIs (WSO2), enterprise/ERP & analytics (Fortude), telecom/mobile/large consumer platforms (Dialog), low‑latency/finance (MillenniumIT), large-scale digital transformation (Virtusa).
• Check case studies, team size in your target tech stack, SLAs, IP ownership and onshore/offshore mix.
• Ask for references for projects of similar size/industry and a short technical assessment before committing.

If you’d like, I can:

• Narrow this to the top 3 best fits for a specific project (give me project type, tech stack, budget and timeline), or
• Pull contact pages and recent case studies for any 3 companies you pick.